3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(substr('tester', 0, 2));

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.40.0150.00018.59
8.3.30.0030.01018.92
8.3.20.0080.00020.29
8.3.10.0000.00821.91
8.3.00.0080.00022.40
8.2.170.0080.00822.96
8.2.160.0140.00319.09
8.2.150.0000.00824.18
8.2.140.0050.00324.66
8.2.130.0180.00026.16
8.2.120.0040.00419.23
8.2.110.0030.00622.26
8.2.100.0120.00019.45
8.2.90.0070.00019.10
8.2.80.0080.00017.97
8.2.70.0030.00717.38
8.2.60.0080.00017.80
8.2.50.0040.00418.07
8.2.40.0040.00418.07
8.2.30.0080.00017.93
8.2.20.0040.00417.53
8.2.10.0000.00717.57
8.2.00.0030.00619.36
8.1.270.0050.00322.02
8.1.260.0000.00726.35
8.1.250.0110.00428.09
8.1.240.0040.00423.84
8.1.230.0080.00319.16
8.1.220.0000.00917.74
8.1.210.0000.00818.77
8.1.200.0060.00317.10
8.1.190.0050.00317.27
8.1.180.0000.00818.38
8.1.170.0060.00318.51
8.1.160.0050.00222.14
8.1.150.0040.00418.43
8.1.140.0100.00017.32
8.1.130.0070.00017.68
8.1.120.0000.00717.21
8.1.110.0050.00217.36
8.1.100.0080.00017.33
8.1.90.0000.00717.36
8.1.80.0050.00217.39
8.1.70.0030.00317.23
8.1.60.0040.00817.46
8.1.50.0000.00817.38
8.1.40.0000.00817.27
8.1.30.0040.00417.50
8.1.20.0040.00417.48
8.1.10.0000.00817.31
8.1.00.0000.00817.33
8.0.300.0030.00318.77
8.0.290.0030.00316.93
8.0.280.0070.00018.23
8.0.270.0000.00817.04
8.0.260.0000.00616.61
8.0.250.0000.00616.73
8.0.240.0030.00316.79
8.0.230.0030.00516.81
8.0.220.0000.00616.68
8.0.210.0050.00316.74
8.0.200.0000.00616.80
8.0.190.0030.00316.82
8.0.180.0070.00016.75
8.0.170.0070.00016.74
8.0.160.0040.00416.80
8.0.150.0040.00416.72
8.0.140.0030.00316.78
8.0.130.0000.00513.19
8.0.120.0000.00816.63
8.0.110.0000.00716.63
8.0.100.0070.00016.65
8.0.90.0000.00716.79
8.0.80.0090.00616.75
8.0.70.0040.00416.74
8.0.60.0000.00716.58
8.0.50.0000.00716.66
8.0.30.0110.00816.96
8.0.20.0120.00817.40
8.0.10.0000.00716.69
8.0.00.0140.00616.66
7.4.330.0000.00515.00
7.4.320.0060.00016.39
7.4.300.0000.00616.39
7.4.290.0000.00716.44
7.4.280.0060.00316.35
7.4.270.0070.00016.39
7.4.260.0000.00716.49
7.4.250.0000.00716.38
7.4.240.0000.00716.39
7.4.230.0000.00716.35
7.4.220.0150.00316.46
7.4.210.0100.00716.49
7.4.200.0000.00716.26
7.4.190.0070.00016.57
7.4.160.0080.00816.41
7.4.150.0140.00317.40
7.4.140.0100.01317.86
7.4.130.0150.00216.37
7.4.120.0130.00616.42
7.4.110.0090.00916.46
7.4.100.0080.00816.33
7.4.90.0090.00916.38
7.4.80.0130.00419.39
7.4.70.0060.01016.29
7.4.60.0130.01016.47
7.4.50.0060.00016.19
7.4.40.0040.01122.77
7.4.30.0150.00616.19
7.4.10.0070.01215.71
7.4.00.0100.00815.27
7.3.330.0030.00312.93
7.3.320.0000.00513.06
7.3.310.0030.00316.14
7.3.300.0030.00316.10
7.3.290.0060.00816.15
7.3.280.0100.00616.14
7.3.270.0130.00317.40
7.3.260.0120.00616.19
7.3.250.0100.00716.24
7.3.240.0110.00816.26
7.3.230.0090.00616.39
7.3.210.0100.00716.22
7.3.200.0060.00919.39
7.3.190.0090.00916.10
7.3.180.0090.00616.14
7.3.170.0100.01016.27
7.3.160.0100.01016.29
7.3.130.0060.01115.39
7.3.120.0050.01115.29
7.3.110.0080.01015.57
7.3.100.0050.00815.12
7.3.90.0070.01015.39
7.3.80.0050.00715.47
7.3.70.0080.00615.46
7.3.60.0070.00415.38
7.3.50.0130.00015.37
7.3.40.0050.00815.42
7.3.30.0030.01115.35
7.3.20.0070.01217.15
7.3.10.0110.00517.26
7.3.00.0040.00917.29
7.2.330.0140.01116.43
7.2.320.0160.00016.31
7.2.310.0110.00616.41
7.2.300.0130.00316.35
7.2.290.0060.01316.52
7.2.260.0040.01415.41
7.2.250.0030.01315.45
7.2.240.0060.00915.67
7.2.230.0060.01015.54
7.2.220.0050.01015.49
7.2.210.0080.00715.71
7.2.200.0080.00915.59
7.2.190.0020.01115.54
7.2.180.0050.01015.47
7.2.170.0050.00915.42
7.2.160.0080.00915.47
7.2.150.0090.00917.57
7.2.140.0090.01017.26
7.2.130.0090.00717.40
7.2.120.0080.00817.44
7.2.110.0080.00817.26
7.2.100.0080.01017.26
7.2.90.0030.01017.46
7.2.80.0040.00917.56
7.2.70.0070.00917.33
7.2.60.0070.00817.44
7.2.50.0070.00717.50
7.2.40.0120.00517.42
7.2.30.0050.01017.49
7.2.20.0120.00517.31
7.2.10.0060.00617.52
7.2.00.0020.01317.92
7.1.330.0060.00916.33
7.1.320.0080.00816.43
7.1.310.0050.00916.42
7.1.300.0060.00716.44
7.1.290.0050.00716.49
7.1.280.0030.00916.55
7.1.270.0090.00516.34
7.1.260.0100.00516.40
7.1.250.0060.00716.35
7.1.240.0040.00816.39
7.1.230.0070.00616.43
7.1.220.0070.00716.32
7.1.210.0090.00516.23
7.1.200.0020.01116.32
7.1.190.0050.00916.41
7.1.180.0060.00716.17
7.1.170.0060.00716.20
7.1.160.0060.01016.41
7.1.150.0030.00916.48
7.1.140.0100.00516.22
7.1.130.0020.01516.22
7.1.120.0070.00716.53
7.1.110.0040.01016.15
7.1.100.0030.01016.96
7.1.90.0080.00916.40
7.1.80.0060.01116.47
7.1.70.0070.00616.65
7.1.60.0080.00917.53
7.1.50.0050.00716.58
7.1.40.0040.01116.48
7.1.30.0060.00916.32
7.1.20.0040.01116.40
7.1.10.0030.00916.29
7.1.00.0090.03118.24
7.0.330.0050.00816.10
7.0.320.0070.00516.15
7.0.310.0070.00716.16
7.0.300.0040.01316.03
7.0.290.0040.01115.94
7.0.280.0070.00515.99
7.0.270.0070.00916.11
7.0.260.0070.00716.02
7.0.250.0040.00916.00
7.0.240.0050.01015.88
7.0.230.0040.01216.17
7.0.220.0040.00916.07
7.0.210.0030.00915.97
7.0.200.0040.00716.31
7.0.190.0060.00616.10
7.0.180.0060.01116.12
7.0.170.0060.00716.06
7.0.160.0050.00516.07
7.0.150.0060.00816.18
7.0.140.0030.03118.08
7.0.130.0070.00516.03
7.0.120.0040.00816.12
7.0.110.0040.01116.03
7.0.100.0050.00815.97
7.0.90.0060.00615.97
7.0.80.0060.00815.98
7.0.70.0050.01015.95
7.0.60.0080.01717.35
7.0.50.0050.02416.68
7.0.40.0050.02416.13
7.0.30.0130.01816.17
7.0.20.0090.02116.08
7.0.10.0090.01816.18
7.0.00.0090.03116.11
5.6.400.0050.00714.75
5.6.390.0050.00714.63
5.6.380.0050.00814.72
5.6.370.0060.00714.74
5.6.360.0030.01014.88
5.6.350.0050.00914.79
5.6.340.0070.00914.84
5.6.330.0040.01214.79
5.6.320.0060.00914.79
5.6.310.0040.00914.96
5.6.300.0100.00314.81
5.6.290.0020.00914.93
5.6.280.0090.02616.83
5.6.270.0050.00914.82
5.6.260.0020.01114.90
5.6.250.0050.00914.93
5.6.240.0040.01214.83
5.6.230.0070.00714.78
5.6.220.0100.00714.96
5.6.210.0100.03216.71
5.6.200.0010.02415.95
5.6.190.0070.03516.68
5.6.180.0170.03116.68
5.6.170.0120.02316.68
5.6.160.0020.03116.84
5.6.150.0060.02615.93
5.6.140.0080.02515.92
5.6.130.0060.03515.96
5.6.120.0060.02116.93
5.6.110.0080.03216.84
5.6.100.0090.03117.02
5.6.90.0090.02916.85
5.6.80.0070.02916.56
5.6.70.0030.01314.84
5.6.60.0030.01114.76
5.6.50.0030.00914.84
5.6.40.0060.00314.70
5.6.30.0050.00714.73
5.6.20.0030.01215.01
5.6.10.0090.00714.83
5.6.00.0050.01014.73
5.5.380.0080.00314.81
5.5.370.0030.00914.63
5.5.360.0110.00514.78
5.5.350.0070.01916.69
5.5.340.0050.02415.80
5.5.330.0040.02616.50
5.5.320.0190.02216.61
5.5.310.0130.02116.56
5.5.300.0050.02815.90
5.5.290.0070.02815.86
5.5.280.0070.02616.80
5.5.270.0080.01716.77
5.5.260.0100.02516.80
5.5.250.0050.03316.76
5.5.240.0040.01616.60
5.5.230.0080.00414.66
5.5.220.0000.01314.84
5.5.210.0070.01114.76
5.5.200.0080.00514.76
5.5.190.0040.00814.76
5.5.180.0070.00714.82
5.5.170.0070.00714.75
5.5.160.0070.00214.90
5.5.150.0060.00414.58
5.5.140.0030.01214.75
5.5.130.0020.00814.90
5.5.120.0030.01114.70
5.5.110.0070.00414.84
5.5.100.0070.00514.45
5.5.90.0080.00614.75
5.5.80.0080.00514.80
5.5.70.0080.00414.78
5.5.60.0050.01014.57
5.5.50.0060.00914.84
5.5.40.0090.00714.77
5.5.30.0130.00314.82
5.5.20.0100.00514.73
5.5.10.0070.00714.58
5.5.00.0020.01414.78
5.4.450.0080.02414.40
5.4.440.0080.02314.41
5.4.430.0040.02614.27
5.4.420.0070.02314.41
5.4.410.0120.01714.14
5.4.400.0040.02314.09
5.4.390.0090.01914.13
5.4.380.0060.02214.03
5.4.370.0440.01514.00
5.4.360.0410.01714.03
5.4.350.0280.02413.97
5.4.340.0390.01914.07
5.4.330.0050.00611.80
5.4.320.0030.01612.06
5.4.310.0040.01912.06
5.4.300.0060.01612.02
5.4.290.0030.01811.98
5.4.280.0040.01511.96
5.4.270.0060.01312.02
5.4.260.0060.01914.15
5.4.250.0080.02214.08
5.4.240.0040.02114.11
5.4.230.0080.01814.18
5.4.220.0040.02514.16
5.4.210.0080.02314.17
5.4.200.0080.02314.09
5.4.190.0080.01814.14
5.4.180.0040.02314.11
5.4.170.0030.02814.13
5.4.160.0080.01814.15
5.4.150.0060.02414.13
5.4.140.0050.02013.24
5.4.130.0100.01813.26
5.4.120.0080.02513.31
5.4.110.0070.02913.34
5.4.100.0010.03113.32
5.4.90.0080.02713.25
5.4.80.0110.02413.32
5.4.70.0080.02613.31
5.4.60.0120.02313.39
5.4.50.0020.02313.31
5.4.40.0100.02213.33
5.4.30.0080.01913.26
5.4.20.0080.01813.31
5.4.10.0030.02413.27
5.4.00.0090.02113.14
5.3.290.0020.01812.32
5.3.280.0030.02212.89
5.3.270.0030.02712.82
5.3.260.0090.02112.89
5.3.250.0010.02412.93
5.3.240.0060.02212.86
5.3.230.0040.02812.85
5.3.220.0110.02112.86
5.3.210.0070.02212.80
5.3.200.0070.02812.79
5.3.190.0070.02412.81
5.3.180.0070.02112.90
5.3.170.0090.02112.84
5.3.160.0050.01912.90
5.3.150.0050.02212.94
5.3.140.0080.02512.93
5.3.130.0050.02412.80
5.3.120.0050.02212.82
5.3.110.0070.02112.93
5.3.100.0060.02112.71
5.3.90.0100.01512.69
5.3.80.0040.02312.60
5.3.70.0090.01812.67
5.3.60.0080.02212.67
5.3.50.0050.02112.58
5.3.40.0060.02212.76
5.3.30.0030.02412.65
5.3.20.0080.01912.61
5.3.10.0040.02312.40
5.3.00.0080.02212.55
5.2.170.0070.04011.15
5.2.160.0100.06011.16
5.2.150.0070.04011.16
5.2.140.0070.04011.14
5.2.130.0100.04711.01
5.2.120.0130.05011.20
5.2.110.0070.05711.09
5.2.100.0070.05011.09
5.2.90.0130.03311.01
5.2.80.0030.04711.01
5.2.70.0030.04710.97
5.2.60.0170.04310.97
5.2.50.0130.04310.91
5.2.40.0130.03710.92
5.2.30.0100.03710.90
5.2.20.0070.04710.97
5.2.10.0100.05011.01
5.2.00.0170.03710.64
5.1.60.0070.0409.86
5.1.50.0070.04010.18
5.1.40.0070.03010.04
5.1.30.0130.03710.09
5.1.20.0130.03310.18
5.1.10.0000.03710.15
5.1.00.0070.03310.13
5.0.50.0030.0308.48
5.0.40.0070.0238.34
5.0.30.0000.0478.17
5.0.20.0000.0308.25
5.0.10.0070.0238.08
5.0.00.0100.0338.12
4.4.90.0070.0236.82
4.4.80.0000.0276.82
4.4.70.0030.0306.82
4.4.60.0000.0306.82
4.4.50.0070.0206.82
4.4.40.0100.0406.82
4.4.30.0030.0306.82
4.4.20.0000.0236.82
4.4.10.0030.0206.82
4.4.00.0030.0336.82
4.3.110.0100.0206.82
4.3.100.0000.0276.82
4.3.90.0100.0136.82
4.3.80.0030.0336.82
4.3.70.0000.0236.82
4.3.60.0000.0336.82
4.3.50.0030.0206.82
4.3.40.0070.0306.82
4.3.30.0000.0236.82
4.3.20.0000.0236.82
4.3.10.0000.0236.82
4.3.00.0100.0206.75

preferences:
43.34 ms | 400 KiB | 5 Q